Secondary sealant to directly applied, or typically applied, liquid sealants.
BACKERSEAL is an economical preformed expanding foam sealant that provides watertight secondary sealing in applications behind conventionally installed liquid sealant and backer rod or behind directly field-applied low modulus liquid sealants.
For mean joint sizes from 3mm up to 150mm. Movement of ±25% (50% total).
Secondary sealant to directly applied, or typically applied, liquid sealants. BACKERSEAL now features EMSEAL's exclusive, breakthrough, cellular acrylic impregnation technology. Watertight, odourless, clean handling, UV stable, non-staining, low temperature flexible, high-temperature stable.
An economical, high-performance, secondary sealant to field-applied caulking.Unlike 'double caulk and backer rod', BACKERSEAL behind field-applied liquid sealants provides true "belt and braces" sealing -two systems working on different principles to perform the same function. 'Double caulk and backer rod' is not only very difficult to install to achieve the geometry necessary to function in moving joints, but the same forces (primarily tensile stresses at the bondline and within the cured sealant) that will cause the outer installation to fail, will also likely cause the inner installation to fail as well.
By contrast, BACKERSEAL, because it works in compression, provides a practical to install, fully functional secondary seal using different performance principles than the primary, liquid sealant. In addition it provides insulation value and the ability to resist the effects of air-pressure differentials.Ideally suited to panelised wall systems, as well as concrete, brick, stone, metal panels, curtain wall systems, etc.
Consists of cellular acrylic-impregnated open cell foam, and where sizes permit, combined with laminations of closed-cell EVA foam. Non-staining and compatible with wide range of caulking and substrate materials.Used as a secondary sealant behind:
1) Conventional backer-rod and liquid sealants
2) Behind directly-applied liquid sealant
Puncturing of caulked facing does not affect sealant system performance. Supplied pre-compressed to smaller than joint size with a mounting adhesive on one face. Material is inserted into joint and adhered to one side. It then expands to seal the joint. Sealing between the foam and substrate is achieved through a combination of the pressure-sensitive adhesive impregnation and the active backpressure of the expanding foam.
Standard sizes from 3mm to 150mm.
Movement of ±25% (50% total) - permanently elastic.
100% free of wax or asphalt compounds (Why does this matter?)
